The term 'not tight' can be described by four different words: LOOSE, ROOMY, SLACK, and LAX. LOOSE is an adjective that means not firmly or tightly held in place; not compact or solid. ROOMY is an adjective that means having plenty of space inside; spacious. SLACK is an adjective that means not tight, firm, or rigid; not taut. LAX is an adjective that means not strict or severe; not exacting. All of these words describe something that is not tight, meaning it is not held firmly in place, has plenty of space, is not rigid, and is not strict.